Improvement in printing-telegraph apparatus



G. L. ANDERS.

Improvement in Printing-Telegraph Apparatus. .1129.,64L PatentedJuly23,1872.

@Wwf/f L UNITED STATES PATENT OFFICE.

GEORGE L. ANDERS, OF BOSTON, ASSIGNOR TO E. B. WELCH, OF OAM- BRIDGE, MASSACHUSETTS. l

IMPROVEMENT IN PRINTING-TELEGRAPH APPARTUS.

Specification forming part of Letters-Patent No. 129,641, dated July 273, 1872.

SPECIFICATION. I, GEORGE L. ANDERS, of Boston, in the y county of Suffolk and State of Massachusetts,

have invented certain Improvements in Elec- Figs. 3, 4, 5, and 6 are parts in detail embodying the general principles of my invention.

The present invention relates to certain new and useful improvements in electro-magnetic printing-telegraph instruments, and has for its main object reliability and rapidity of action. My improvements consist in a series of devices, to be fully explained in due course, so arranged and operated as to control the vibrating distancevof the armature of an electro-'magnet by the polarity of the current transmitted through the electro-magnet in such a manner that in its shorter vibrating distance it shall effect the release of an escape-wheel, and in its greater action shall secure the impression of the desired letter on a strip of paper; also, of so arranging and operating an escape-wheel, in connection with other devices of the instrument, as to allow of the adjustment of the type-wheels of two or more instruments at the proper point to obtain the impression of a letter on the strip of paper passing below them; and, lastly, of a device, in connection with other devices of the instrument, arranged and operated so as to regulate the feeding of the paper after each impression.

a, a, in the drawing represent a frame of a telegraphic instrument, connected at the top by a bar, b. Supported by the frame a a. is an arbor, c c, to which are connected a typewheel, d, escapement-wheel e, gear f, connecting with a train of wheels and weights, and

cam-wheel g, which connects with a spring, i, and operates a lever-arm, h, turning an arbor, k, which is supported by the frame a a and actuates an arm, l, connected by a feed-roller, m, with a shorter arm, l', together forming a standard for the support of a swing-clutch, m', between which and the roller m a strip of paper, n, is fed along and controlled in its passage, as will be hereinafter described. IAttached to an arbor, o o, at the back of the lower portion of the frame a a, is a bell-cranklever arm, p, one endof which extends down through a slot, a, formed in the top of the instrument-case q, and forms an armature, t, that is actuated by the electro -magnet u u. The lever-arm p is formed near the front end with pallets s s and a dog, p', the latter connecting with a double slot, C c', formed in the top of an armature, w, that extends through a slot, r', formed in the top of the instrumentcase q, and is operated so as to swing either to the right or left by the action of the polarized magnet 00 x. The pallets s s are so arranged as to engage with or be disengaged from pins or teeth y y y, 85o., or their mechanical equivalents, arranged at proper intervals on the escapement-wheel e, which is also provided with one long pin, y', or `its mechanical equivalent. Attached to and operated by the arbor 0 o is a lever-arm, z, operating a press, z', through which passes the paper n in such a manner as to bring the paper n at the desired intervals against the type-wheel d and impress it with the letter required, the action of the lever-arm z and press z being regulated by the operation of the pallets s s in connection with the pins 3/ y y, 8vo., and the pin y of the escapement wheel e, together with the cam-wheel g, and the lever-arm h, and spring i, the latter acting against the bar b of the frame a a.

The operation of my improvements is as follows: By the action ofthe armature t, lever-arm p, and pallets s s', and the dog p in the. short slot c, all the pins y y y, &c., and y in the escape-wheel e, are allowed to pass one by one the pallets s s until a desired letter is reached; then, through the action of a reverse current on the polarized magnet x and armature fw, the long slot t is presented to the dog p', and the armature t is attracted nearer the for each impression of a letter, it will be seen* that the cam g, operating the arm h, lever-arm Z, and clutch m', will draw along the paper n, between the type-wheel d and press z, a sufficient distance for each impression, thus regulating its feed, and by this arrangement it will also be seen that the paper u is fed along by the motive power connected with the instrument.

Having thus fully described my improvements, what I claim as my invention, and desire to have secured to me by Letters Patent, 1S-

l. A printing-telegraph instrument, having an electro-magnet, u u, the Vibrating distance of whose armature t is controlled by the polarity of a current transmitted through the electro-magnet m in such a manner that in the shorter Vibrating distance of the armature t it shall effect the release of the escapement wheel e, and in its greater action shall secure an impression of a letter on a strip of paper,

a, substantially as specified.

2. The escapement-wheel c, provided with short pins y y y, &c., and a long pin, y', so op erated that the escapement-Wheele is released by the action of the electric currents to the desired letter, and is then at once thrown forward to the standard point, regulated by the long pin y on the escapement-wheel e, substantially as specified.

3. The pallets s s on the bell-crank-leverv arm p, arranged as shown, to allow the passage of the pins y y y, 86e., in combination with the armatures t and w, substantially as specified.

4. The armature w, formed with a double slot, v o', in combination with the polarized magnet .fr bellcrank -lever arm p, and escapement-wheel e, substantially as specified.

5. The bell-cranklever arm p, arranged with pallets s s and dog p', connected with and 0perated by the armatures t and w, substantially as specified.

6. The cam-wheel g on type-wheel arbor c c,

vin combination with arm h, spring t', and arbor Witnesses CARROLL D. WRIGHT, SAivn.. M. BARTON. 

